Aluminium exterior door L436 made to order

Aluminium exterior door L436: contemporary profile with exceptional thermal performance (Ud 0.85 W/m²K) and quadruple glazing for superior insulation and security.

The L436 is a premium aluminium exterior door engineered for contemporary buildings demanding high-performance thermal efficiency. The complete system achieves a depth of 92 mm, delivering significant structural mass and a pronounced visual presence at entrances.

The extruded aluminium profile—3 mm wall thickness—is complemented by an articulated thermal break of 34 mm, which efficiently fragments thermal pathways and minimises heat transfer. Triple EPDM gaskets create a continuous seal around the entire perimeter, preventing air and water infiltration. Frame depth of 80 mm and leaf thickness of 92 mm ensure long-term structural rigidity and dimensional stability.

The glazing system employs a quadruple configuration (44.1 triplex / 5mm Satinato / 44.1 triplex), delivering thermal performance rated at Ud 0.85 W/m²K per ift Rosenheim certification. This performance places the door among the most efficient available, substantially reducing energy losses while maintaining consistent interior comfort. The total glass thickness and specialised profile geometry also contribute to superior acoustic insulation.

L436 is available in standard dimensions up to 1100×2300 mm for single-leaf openings, with capacity for larger configurations (up to 1200×2500 mm) for custom projects. The system accommodates both traditional hinged and sliding variants, adapting to each project's architectural language.

This door suits contemporary residences, premium commercial buildings, and renovation projects prioritising both energy efficiency and refined design. The combination of aluminium material, thermal performance, and modern visual presence makes it ideal for spaces demanding both environmental responsibility and aesthetic selectivity.

The L436 achieves a thermal coefficient (Ud) of 0.85 W/m²K, certified by ift Rosenheim, placing it in the premium energy-efficient exterior door category. This performance comes from the aluminium profile with 34 mm articulated thermal break combined with specialised quadruple glazing. You benefit from minimal heat loss and superior comfort, with measurable savings on heating costs over time.

The L436 features quadruple glazing with a 44.1 triplex / 5 mm Satinato / 44.1 triplex structure, delivering superior impact protection and thermal-acoustic resistance. The multiple triplex glass layers (bonded with PVB film) and Satinato glass create an exceptional safety barrier. This construction not only prevents break-ins but also ensures acoustic comfort and optimal thermal insulation.

The L436 offers maximum standard dimensions of 1100×2300 mm for classic configurations and up to 1200×2500 mm for single-leaf installations. All dimensions can be customised to order based on your requirements, with our design team ensuring perfect integration into existing or new frames. We recommend on-site measurement consultation to guarantee flawless fit and proper closure mechanism operation.

The L436 features a 3 mm aluminium structure with modern profile and thermally insulated internal core. The total system depth is 92 mm (frame 80 mm, leaf 92 mm), ensuring long-term rigidity and durability. Maintenance is straightforward: clean with mild soapy water on aluminium surfaces and glass monthly, and lubricate closure mechanisms annually with specialised lubricant. The aluminium finish resists weathering and requires no periodic repainting.

The L436 can be installed in existing frames or new construction, with customisation based on precise measurements. The 92 mm system depth is compatible with most standard European masonry. Installation requires properly sized anchors and multi-point EPDM sealing on 3 levels, ensuring perfect insulation. We recommend a qualified professional for installation, who will check and adjust hinges and closure mechanism to specification.

The L436 is equipped with 3-point EPDM multi-point sealing ensuring secure and watertight closure to air and water. Premium hardware and concealed hinges guarantee long-term proper operation. The robust construction with 3 mm aluminium and quadruple glass resists physical impact. For maximum break-in security, we recommend adding certified RC2/RC3 locking systems available as custom additions. ift Rosenheim testing confirms complete structural reliability.